alleryWhy do ionic compounds generally have high melting and boiling points?
ALoose stacking of neutral molecules
BWeak covalent sharing between atoms
CFree electrons moving between layers
DStrong electrostatic attraction between ions
Answer & Solution
Correct answer: D. Strong electrostatic attraction between ions
1. Ionic compounds consist of oppositely charged ions held together.
2. The electrostatic force of attraction between these ions is very strong.
3. Large energy is needed to overcome this attraction.
4. Hence melting and boiling points are high; weak covalent sharing would give low values, ruling that out.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.109_
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